morris



2 Sheets-Sheet 1.

(No Model.)

W. L. MORRIS. BALL PULVERIZER. No. 581,755.

Patented May 4,1897.

62 00 lua lvlv EJTUK %ZZ%W WIITNESSES; 4 W w iy (No Model.\ 2Sheets-Sheet 2.

W. L. MORRIS, BALL PULVERIZER.

No. 581,755. Patented May l, 1897.

INVENTOR.

A TTORNL y.

Nritnn Srarns ATENT OFFICE.

IVILLIAM L. MORRIS, OF CLEVELAND, OIIIO, ASSIGNOR TO THE MORRIS EALLPULVERIZER COMPANY, OF SAME PLACE.

BALL PU LVERIZER.

SPECIFICATION forming part of Letters Patent No. 581,755, dated May 4:,1897.

Application filed May 29, 1896. Serial No. 593,599. (No modelh To allwhom it may concern:

Be it known that 1, WILLIAM L. MORRIS, a citizen of the United States,residing at Cleveland, in the county of Cuyahoga and State of Ohio, haveinvented certain new and useful Improvements in Ball Pulverizers, ofwhich the following, with the accompanying draw ings, is aspecification.

This invention has relation to that class of devices especially designedfor pulverizing rock and ores which carry deposits of precious metals,and in which the pulverizing agent consists of a series ofindependently-acting balls or rolls adapted to revolve in a trackconcentric to the aXis of an actuating superimposed driver, the latterbeing so arranged as to allow the pulverizingballs to pass over materialvarying in size.

In the accompanying drawings, which form a part of this specification,Figure 1, Sheet 1, is a central vertical section of my improved device.Fig. 2, Sheet 2, is a plan of the tripod-frame. Fig. 3, Sheet 2, is ahorizontal section through the rotatable driver, showing disposition ofthe spring-wells and aperture for the reception of the wabbler. Fig. l,Sheet 2, is a similar view through the wabbler.

1 represents a suitable cylindrical case or shell, the upper end ofwhich terminates in a concentric channel having the flaring flange 2,said flange being provided with a series of cars 3, coincident with aseries of lugs 4 upon the periphery of the cap 5, by means of which andsuitable bolts 6 said cap is secured and retained in place. The cap isprovided with a proper opening 7, through which the material to beoperated upon is fed by anysuitable means. This flanged channel receivesa circular track 8, which is provided with a removable wearing face orring 9, and in which the series of pulverizing balls revolve. The spacebetween this track 8 and the wearing-ring 9 is partially filled withasbestos, while I drive in wooden wedges at the upper edge to obtain thedesired rigidity.

11 is a rotatable driver which is provided with a removable wearing-ring12, which rests upon the pulverizi11g-balls 10. This driver 11 ishollow, and in its depending portion there is formed a series of wells13, Fig. 3,

preferably four in number, which are designed to receive the springs 15.The cen tral portion of this driver 11 has formed in itan axial opening14, substantially in the form of a Greek cross, as shown, and this isdesigned to receive the head or wabbler 16, which is slidingly keyedupon the upper end of the shaft 18. 17 is a cap which covers the weightand is retained in place thereon by any suitable bolts. This cap carriesa diskplate 19, upon which the materials to be 0perated upon falls andwhich, through centrifugal action, tends to distribute the materialevenly to the action of the pulverizingballs.

The lower end of the driving-shaft18 passes through a suitable split boX20, which is supported by a tripod-frame 21, the arms of which latterare rigidly secured to the inner Walls of the case 1. The said box 20may be formed integrally with the said tripod, as shown in Fig. 2.

A split clamp-nut 22 is secured upon the shaft, near its lower end, theupper face of said nut having an annular groove formed therein for thereception of antifriction-balls 23, upon which latter rests a loosecollar2-t.

25 is a removable case for inclosing the parts last described to preventdust from getting upon the bearing.

26 represents the drivin g-pulley,w11ich may be keyed upon the shaft,though I prefer to employ a split pulley, as shown, as it is easilyremoved and adjusted.

28 is an inclined partition-shelf which directs the pulverized materialto the discharge 29. The center of this shelf carries a half-boX 31,provided with a cap 32, and between which the shaft passes. Its upperend passes through the hub of the head or wabbler 1G and receives anadjusting cla1np-11ut 34 is a cap-collar to exclude dust from the box 31and stuffing-box 37.

35 represents an oil-cup from which a conducting-pipe 36 runs,preferably, to the cap 32, so that oil may be delivered to the shaftpractically at the highest point where lubrication is needed, and fromwhence, by gravity, the lubricant passes to the extreme lower end of theshaft.

In practice motion is imparted to the shaft through the medium of thedrive-pulley and through the shaft to the driving-weight. Therevolutions of the weight or driver cause the balls upon which it reststo travel around the track at a speed proportionate to that at which theshaft is driven, and the material fed to the machine passes to theball-track, Where it is pulverized, not through the vertical pressureupon the grinding balls or spheres alone, but also through the pressureproduced from their centrifugal and tan gential action when inoperation.

In machines of this class the centrifugal action tends to cause thegrinding spheres or balls to climb or creep up the wall of thegrinding-track to the highest attainable point, especially when drivenat a high rate of speed. Such movement of the balls carries them abovethe point at which the best results areobtained in pulverizing, as itlifts them above the'bottom of the track. To obviate this objection andto retain the balls at their lowest points where they will travel in thebottom of the track, I employ the two adjustable nuts 22 and at thelower and upper ends of the drive-shaft, respectively, so that the partsmay be readily adjusted in order to limit the centrifugal climbing ofthe balls, while it in no wise interferes with the oscilla tion of thedriver incidental to the unevenness of the material being operated upon.

By securing the shaft against end displace ment, as described, it willreadily be seen that upon turning down the nut 33 the wabbler is forceddown upon the shaft, thereby necessarily increasing the pressure of thesprings upon the revoluble weight or driver. Hence such increasedtension must exert a greater pressure upon the grinding-balls than wouldbe exerted by the gravity of the parts. This increased tension of thesprings could not be obtained were it not for the fact that the shaft,being secured against end play, practically forms one of the points ofresistance to prevent the expansion of the springs, while it alsoprevents the centrifugal force, the spring expansion, or both combined,from lifting or forcing the revoluble parts out of their relativepositions.

The machine as above described is for dry crushing, but I provideaperforated pipe 38,

supported by brackets 39, through which water maybe introduced, so as toadapt the machine for wet work.

What I claim as my invention is 1. In a pulverizing-mill, thecombination of a driving-shaft, a revoluble hollow driver inclosingsprings interposed between said driver and a wabbler longitudinallyadjustable upon said driving-shaft, the lower end of said shaft beingjournaled in antifrictionbearings and secured against end displacement,and a driving-rin g revoluble with said hollow driver and exerting avertical, tangential and centrifugal pressure upon grindin g-ballstraveling in a rigid concentric grinding-track, substantially as and forthe purpose set forth.

2. In an ore-pulverizer, in combination, an inclosing frame,a concavedring-track, crushing-balls within said ring-track, a concavedriving-ring in peripheral contact with said crushing-balls, a hollowdriver engaging said driving-ring, a wabbler movable longitudinally-uponan actuating-shaft, springs interposed between said wabbler and saidhollow driver, an ad justing-nut upon the upper end of said shaft, and.a cap removably secured to the said driver and carryingadistributingdisk, substantially as and for the purpose set forth.

In a pulverizing-mill of the character de scribed, in combination, adriving-shaft, a wabbler longitudinally adjustable upon said shaft, ahollow driver engaging said wabbler, springs interposed between saidhollow driver and said wabbler an adjusting-nut upon the upper end ofsaid shaft, rigid bearings for the lower end of said shaft, a loosecollar upon said shaft below said rigid bearings, an adjustable nut uponthe lower end of said shaft, and antifriction -balls between said loosecollar and said nu t, substantially as and for the purpose set forth.

In testimony whereof I affix my signature, in presence of threewitnesses, this 21st day of May, 1896.

' M. Ii. MORRIS. lVitnesses:

J OHN W. Monms, E. HARVEY, H. S. SPRAGUE.

